Slay the Spire 2 Necrobinder Card Tier List (Patch v0.102.0)
Doom executes, Soul engines, and Osty buffs ranked
The entity:necrobinder runs three interlocking systems: Doom marks enemies for execution, the Soul engine cycles your deck faster than any other character can, and the Graveyard converts your Exhaust pile into a second hand. None of them work in isolation. A deck that only does one of the three tends to crack under the pressure that the entity:necrobinder's 66 HP (52 at Ascension 2 and above) can't absorb for long. The builds that reach Act 3 consistently are the ones where all three systems pull in the same direction.
This tier list reflects v0.102.0 (April 2, 2026), which redesigned entity:borrowed-time from a defensive tool into an energy-surge play. Cards whose names aren't documented in the wiki sit in the Unranked section rather than being invented. The entity:necrobinder's full pool runs approximately 80 cards, and the community has solid coverage of maybe a dozen of them.
S Tier: The Engine
entity:capture-spirit
Three Souls for 1 energy. That's the entire card. Each Soul draws 2 cards and exhausts, so entity:capture-spirit is a 1-cost card that draws 6 over the next three card plays. No other common in the game produces that volume of cycling at that price. In a 20-card deck, entity:capture-spirit effectively lets you see your entire deck inside two turns if you chain it with other Soul producers.
The Exhausts matter: Souls leave the game permanently after you play them. The Soul engine has to keep producing them to keep cycling. One entity:capture-spirit is strong. Two is a different level of consistency entirely. Take both copies when offered.
entity:grave-warden
entity:grave-warden generates one Soul and gives Block for 1 energy. It does two things the entity:necrobinder needs simultaneously: defense and engine fuel. The block isn't spectacular on its own, but block plus a Soul means you're defending and cycling in the same card play. That efficiency is why entity:grave-warden shows up in every viable entity:necrobinder archetype regardless of whether you're running Doom Execute, Soul Engine, or Osty Damage as the primary win condition.
It's the card that holds the deck together before the engine is fully assembled.
entity:dirge
entity:dirge costs X energy, creates X Souls, and increases Osty's HP. Playing it for 2 energy gives you 2 Souls (4 draws) and a buff to your only minion. Playing it for 3 gives 3 Souls and a larger Osty HP increase.
What makes entity:dirge S-tier rather than A-tier is the Osty interaction. Osty absorbs incoming damage that would otherwise hit the entity:necrobinder's 66 HP. An Osty with more HP is directly more time you have before the fight goes wrong. entity:dirge pays off in card draw and in HP buffer simultaneously. Late in a run, entity:dirge at 3 energy on the right turn can generate so much draw that you see your entire deck before the turn ends.
A Tier: Strong Picks That Earn Their Slot
entity:bodyguard
entity:bodyguard is a starter card. It formalizes what Osty already does: it puts Osty in a protection role, directing damage away from the Necrobinder and onto the minion with its own HP pool. In the early acts, before you have the block density to survive multi-hit enemies, entity:bodyguard is what keeps you alive through the turns where your Soul engine isn't fully running yet.
It scales down in value as Osty dies faster against high-hit-count enemies. That's not entity:bodyguard's fault. The real answer to multi-hit elites is building enough Osty HP via entity:dirge, not replacing entity:bodyguard.
entity:borrowed-time (post-v0.102.0)
Before v0.102.0, entity:borrowed-time was a different card. The redesign made it a 1-cost Skill: all your card costs increase for the turn, but you receive a significant energy boost in exchange.
The practical use is burst: pay the cost-increase penalty to generate a surplus of energy, then play expensive cards (Dirge at max X, high-cost attacks) in the same turn you couldn't otherwise afford them. It's a card that pays off in the turns where you need to do more than 3 energy's worth of work at once: boss turns, elite turns where killing fast matters more than playing cleanly.
Its value varies with your deck's cost distribution. A deck full of 0-cost and 1-cost cards barely notices the penalty and gets the energy surge for near-free. A deck with many 2-cost cards takes a real hit. Evaluate it against what you've already picked before taking it.
Doom-application cards (collective)
The wiki has confirmed that multiple Necrobinder cards apply Doom stacks but hasn't documented their individual names and costs yet. At the archetype level, Doom cards belong in A tier because the execute mechanic is the Necrobinder's only reliable boss-killing tool that doesn't require pure damage volume. Landing 20+ Doom on a boss with 80+ HP remaining, then weathering one enemy attack while it executes, is a viable path through Act 3 that other characters can't replicate.
When the full card list is documented, individual Doom cards will move to appropriate sub-tiers based on their cost and Doom output. For now: if a card's description mentions Doom stacks, it earns a slot in a boss-focused deck.
B Tier: Situational, Worth Considering
entity:unleash
entity:unleash is the second starter. Its exact effect text isn't fully documented, but it interacts with Osty in some form and fills the Necrobinder's early-game damage slot before dedicated attack cards arrive.
Starter cards for new characters are often designed to demonstrate the mechanic rather than to be individually powerful. entity:unleash fits that pattern. It's not a card you build around, but it's not a card you remove at the first opportunity either. In the early acts before your deck has direction, it does damage while you figure out whether Doom Execute, Soul Engine, or Osty Damage is the right pivot.
Osty-synergy uncommons (collectively)
Several Necrobinder uncommons interact with Osty's HP, damage, or behavior beyond Dirge and entity:bodyguard. Their individual names aren't documented yet, but the pattern is consistent: cards that buff Osty's stats or add attack triggers to Osty's behavior are B-tier building blocks for the Osty Damage archetype. If you're running that plan, these cards are your core; if not, they're largely irrelevant to Doom Execute or Soul Engine builds.
C Tier / Unranked
The wiki documents roughly 12 Necrobinder cards by name out of an estimated 80. The remaining 68 or so are currently unnamed in available sources. Assigning tiers to unnamed cards would require inventing effects, which destroys the usefulness of a tier list. These sit in Unranked until the community wiki's full card database is complete.
If you've encountered a Necrobinder card not listed here and can share its name and effect text, the community wiki is the right place. Cards confirmed to exist but not yet rated: all Doom-application cards not covered above, Graveyard-interaction cards, and Necrobinder Powers (at least one is expected to anchor the Hybrid Spellcaster archetype).
FAQ
What's the Doom mechanic and when should I use it?
Doom is a death-mark debuff. When an enemy's HP is at or below their current Doom value at the END of their turn, they die instantly. The key timing: the enemy takes their action first, then dies. Doom builds account for that by running enough block and Osty HP to survive one full enemy attack cycle. The reward for absorbing that attack is a free instant kill, particularly useful on bosses where the alternative is trading multiple high-damage turns.
Use Doom most aggressively on single, high-HP targets. Multi-enemy rooms with low-HP enemies usually die to direct damage faster than Doom can ramp up.
How does the Necrobinder's Soul engine differ from other card draw?
Most card-draw effects in Slay the Spire games are one-time triggers: play a card, draw a card. Souls work differently. Each Soul draws 2 cards and then exhausts permanently. The Soul engine scales with how many Soul-creator cards are in your deck. One entity:capture-spirit generates 3 Souls (6 draws) from a single card play. At high density, the engine lets you see your entire deck in a single turn.
The exhaust cost matters. Souls don't recycle. If your Soul creators are at the bottom of your draw pile, the engine pauses until they come back around. Deck thinning (via entity:merchant card removal) makes Soul cycling more consistent by reducing the distance between Soul creators and the cards they're helping you find.
Is Osty a character I control or automatic behavior?
Osty is automatic. entity:bound-phylactery (the default starter relic) summons one Osty at the start of each turn. Osty has its own HP pool and absorbs incoming damage that would otherwise hit the Necrobinder. You don't direct Osty's attacks or position. The behavior is determined by the cards you play. Cards like Bodyguard formalize the protection role, and cards like Dirge increase Osty's HP pool. Osty acts as a buffer that extends the Necrobinder's effective HP well above the printed 66.
When Osty dies in a fight, the Necrobinder's damage soak disappears. Multi-hit enemies that spread damage across Osty rapidly are the main reason Necrobinder struggles in certain elite rooms.
What did v0.102.0 change about entity:borrowed-time?
The previous version of entity:borrowed-time was primarily defensive. The v0.102.0 redesign flipped the concept: it's now a 1-cost Skill that raises the cost of all your cards for a turn while providing a significant energy surplus. You pay with higher card costs and receive extra energy to spend. The intent is a burst turn: generate energy above your normal 3, then spend it on X-cost cards like Dirge or high-cost attacks that you couldn't otherwise afford in the same window. It's a risk-reward card now. The old version was simpler to evaluate; the new version rewards players who can plan a turn in advance.
Why is Necrobinder considered the hardest character?
Every source covering Necrobinder in depth flags the same three issues. First, 66 HP (52 at Ascension 2 and above) is the lowest starting total in the game. Mistakes that other characters can absorb kill her. Second, the Doom execute requires deliberately eating one enemy attack cycle. That's a skill the game doesn't teach explicitly, and new players who try to block everything can't make Doom builds work. Third, the three systems (Doom, Souls, Graveyard) interact in non-obvious ways. Playing Soul engine cards into a Graveyard build is fine. Playing Doom cards into a Soul engine that doesn't generate block creates turns where you've cycled your whole deck but have nothing to absorb the attack that kills you before the execute triggers. The ceiling on the Necrobinder is among the highest in the game. Getting there requires understanding all three systems and knowing which combination the current run's card pool is actually supporting.